Key Switch Insert Signal Inspection

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Check Key Switch Input Signal

Fig 1: Checking Key Switch Input Signal With CONSULT-II
Courtesy of NISSAN MOTOR CO., U.S.A.

With CONSULT-II

Check key switch (IGN KEY SW) in DATA MONITOR mode.
1. When key is inserted to ignition key cylinder: IGN KEY SW ON
2. When key is removed: IGN KEY SW OFF to ignition key cylinder
Without CONSULT-II
1. Disconnect the BCM connector.
2. Check voltage between BCM harness connector M4 terminal 69 (PU/W) and ground.
  
  Fig 2: Checking Key Switch Input Signal Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. When key is inserted to ignition key cylinder: Approx. 12V
  2. When key is removed to ignition key cylinder: Approx. 0V
OK or NG
1. OK: Key switch and key lock solenoid (key switch) is OK.
2. NG: Go to 2.
Check Key Switch Circuit
1. Disconnect key switch and key lock solenoid (key switch) connector.
2. Check continuity between BCM harness connector M4 terminal 69 (PU/W) and key switch and key lock solenoid (key switch) harness connector M64 terminal 4 (PU/W).
  
  Fig 3: Checking Key Switch Circuit
  Courtesy of NISSAN MOTOR CO., U.S.A.
  1. Continuity should exist.
OK or NG
1. OK: Go to 3.
2. NG: Repair harness or connector.
Check Key Switch (Insert)
Check continuity between terminals 3 and 4 of key switch and key lock solenoid (key switch) connector M64.

Fig 4: Checking Key Switch (Insert)
Courtesy of NISSAN MOTOR CO., U.S.A.
1. When key is inserted to ignition key cylinder: Continuity should exist.
2. When key is removed to ignition key cylinder: Continuity should not exist.
OK or NG
1. OK: Inspection end.
2. NG: Replace key switch and key lock solenoid (key switch).